Cummins original Replacement for OEM 3406604 Diesel Common Rail Fuel Injector Assembly for M11 Diesel Engine Cross Reference Part Numbers 3411821 3071497 3087648 4914328 original new injector

Engineered for demanding heavy-duty operations, the 3406604 PT fuel injector delivers OEM-grade performance across Cummins M11 and N14 series diesel engines. Manufactured with high durability materials and precise internal tolerances, this injector assembly ensures precision fuel metering and an optimized spray pattern for consistent combustion under continuous industrial workloads. It serves as a direct original-specification replacement, cross-referencing authorized numbers 4026222, 3076130, 3087648, 3076704, 3411754, 3411760 and 3803528.

Designed for stable fuel delivery and excellent wear resistance, this component supports improved combustion efficiency, better fuel economy, lower emissions and reduced engine knocking. Its long operational lifespan and fleet maintenance friendly design make it a reliable choice for long haul truck fleets, logistics operations, excavators, wheel loaders, mining haul trucks, commercial marine vessels, backup generators and oilfield pumping units worldwide.

For optimal results, verify the engine serial number before installation, replace injector seals, inspect fuel lines, check PT pump condition and calibrate according to Cummins service procedures. Perform fuel leakage inspection followed by engine idle and load testing. Recommended maintenance includes using clean diesel fuel, replacing fuel filters regularly, preventing water contamination and monitoring exhaust smoke. A diagnostic checklist covering fuel pressure, injector leakage, spray pattern, calibration and compression testing helps maintain peak engine reliability.